### Statistics

### Homework

### Fall 2006

8/23 p36: 9; pp64-65: 7, 13; p89: 3

8/28 p89-91: 5, 9, 11, 13, 19

8/30 pp122-124: 11, 13, 17, 23

9/6 p125: 33, 35;

A company puts 3 types of trading cards in cereal boxes: Tiger
Woods, Lance Armstrong, and Serena Williams. 20% of the cards are
Tiger Woods cards, 30% of the cards are Lance Armstrong cards, and
the remaining 50% of the cards are Serena Williams cards. Linda wants
to collect all three cards, so she will keep pestering her parents
until she has collected at least one of each of the three cards. How
many boxes will she have to get her parents to buy in order to get
all three cards?

Simulate an experiment. Use a table of random numbers or a random
number generator to simulate picking a card. If a 0 or 1 comes up,
that means she got a Tiger Woods card. If a 2, 3, or 4 comes up, that
means she got a Lance Armstrong card, and if a 5, 6, 7, 8, or 9 comes
up, that means she got a Serena Williams card. Keep choosing random
numbers until she has gotten all three kinds of cards. After each
experiment, note the number of boxes it took before she got cards of
all three athletes. Repeat this experiment 15 times, and find the
average number of boxes for the trials.

9/11 pp334-335: 9, 11, 17, 19.

9/13 pp357-360: 7, 45.

9/18 pp375-376: 1, 3, 5, 9, 15.

9/20 pp394-395: 7, 13.

9/25 p424: 3, 5

10/2 p444: 11, 13, 15; pp468-469: 11, 13, 17.

10/9 pp489-490: 1, 3, 5, 11, 13.

10/11 pp507-509: 5, 7, 15, 19

10/16 pp540-542: 11, 13, 25

10/18 pp566-569: 9, 19, 21.

10/23 pp588-587: 13, 5

11/1 p189: 35

11/6 p185-186: 1, 11, 13, 15.

11/8 p190: 40.

11/13 pp655-662: 1, 3, 27.

11/20 pp626-629: 3, 17, 19